MViControl

the following question from Jetqin still haven't been answered: how does this line fitting algorithm find the initial subset of points to start? below is my personal understand for the question: Pixel Radius specifies the neighborhood pixel relationship for the initial subset of points being used. The pixel radius defines the maximum distance allowed, in pixels, between a valid point and the estimated line. The algorithm estimates a line where at least half the points in the set are within the pixel radius. If a set of points does not have such a line, the function attempts to return the line that has the most number of valid points. Can anybody explain the detail process of how it works?

Thanks buddy, all of your answers did help me a lot!

Hi all, When I use NI data connectivity toolkit to search database , I plan to use a multi list box (as a table) to display the seach database results, but I found the default output of the earch is a 2D variant array. How can I display the contents in a multi list box? Thanks

Thank sam, I will try to fix it.

Thanks Sam, I think you mentioned a very important point. But in the framework, we always took the queue refnum which been created before loop start, in this case, we can make sure very time, the enqueue function will use a valid refnum, if I am wrong, please correct me, thank you.

I am not so clear about what you mentioned, the reference will always point to the queue buffer, whatever you enqued the element to(if enqueue an empty element array, it should not impact to the application running). I am realy appreciate If you could make your worry clear, so that we can make this framwork more stable. Thanks buddy, can you please upload the vi instead of picture:worshippy:

Hi all, I just created a new version of Framework "GKY-Paralellism-3Loops V1.0"and want to share with friends here(see attachment) I am not so satisfied with 2 thing in this version: 1) the exit of 3 Loops. when a error happened in one loop, only after user triger a event, the application can exit. I plan to use event to avoid this in next version, but I also want get suggestions about EXIT LOOPS from here. 2) Error handling Loop was not added in this version, cause until now I haven't got good idea about how to handling errors in the Error loop, maybe someone can add this loop so that we can complete the framework together. enjoy and waiting for suggestions! GKY-Paralellism-3Loops-V1.0.zip

Thx, do you have some examples?

Hello, I am struggling with the multi-loop architectures these days, can anybody share a multi-loop design pattern with the error handling loop included? Thx

May be XControl is a good way to realize it.

To be honest, I am studying the Xcontrol technique of LabVIEW, and I found if we can create controls by code, then we could dynamically change the GUI, it just a try. P.S I do not want to creating LabVIEW DE by myself, I just want to try the capbility when I saw the VI scripting functions.

I want to build a XControl which could allow user add buttons by input button tag dymanically, I had ever thought this can be implimented by VI scripting, but finaly found the control can only been created in a new opened VI.

Hi all, Is there a way to create a contol on Front Panel by code dynamicaly? I known you may say using "VI scripting", but I found the control can only been created on a new opened VI rather than the VI which have the creating code. Can anybody point me a way?

Thanks Yair， I had ever thought I can use Pict Ring directly, now I try to made a xcontrol to impliment the function.

Hi all, I try to add a pict ring in my program, and I will resize it by code. but when I change the size biger than the image in the box, I found the image can not scale with the size changing. Are there any way to scale the image with the size zoom out/in? Thx

That's realy cool! It is a good idea to upload the sharing controls to code repositry.

Thanks buddy, Actualy, I did get some useful controls which can build professional UI very fast, my point here is that people here can share the controls what they have here.

Hello all, I had ever saw on ni.com that sombody shared user defined labview control kits(see attachments) which can build very pretty GUI, are there any other free kits to download? Thx ni theme.zip

Thanks for reply! What kind of design pattern do you often use for the parallel process? then from this point of view, is the queue better than events?

Hi all, As we all known, we can define user events in labview and then we can triger the events. I just want to known how may events can be queued in event queue of labview? the reason why I am asking this is because that I want to decide whether to use event or queque to impliment a state machine. thx

Thanks, Got it.

Hello, I have to use chart in my project since I need draw a real time curve, but I also want to show the grid of the chart (just like graph), but I found there is no option to config this. Can anybody share the information if you done this successfuly before. thx

According to LV manual, you can put wait function in each loop and use the time interval for each wait function to set priority of loops, the smaller interval you set the higher priority the loop get.